On Wed, 28 Jun 2023, haochen.jiang wrote:
> On Linux/x86_64,
>
> dd86a5a69cbda40cf76388a65d3317c91cb2b501 is the first bad commit
> commit dd86a5a69cbda40cf76388a65d3317c91cb2b501
> Author: Richard Biener <rguent...@suse.de>
> Date: Thu Jun 22 11:40:46 2023 +0200
>
> tree-optimization/96208 - SLP of non-grouped loads
>
> caused
>
> FAIL: gcc.dg/vect/slp-46.c -flto -ffat-lto-objects scan-tree-dump-times vect
> "vectorizing stmts using SLP" 4
> FAIL: gcc.dg/vect/slp-46.c scan-tree-dump-times vect "vectorizing stmts using
> SLP" 4
>
> with GCC configured with
>
> ../../gcc/configure
> --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-2117/usr
> --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld
> --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl
> --enable-libmpx x86_64-linux --disable-bootstrap
>
> To reproduce:
>
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="vect.exp=gcc.dg/vect/slp-46.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/gcc && make check
> RUNTESTFLAGS="vect.exp=gcc.dg/vect/slp-46.c --target_board='unix{-m64\
> -march=cascadelake}'"
>
> (Please do not reply to this email, for question about this report, contact
> me at haochen dot jiang at intel.com)
I have opened PR110445 for the missed optimization.
